Question: What is formation of executive authority of darts ?
Paraphrase: What is arrangement of official specialist of darts ?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q131471 wdt:P797 ?X . ?X wdt:P571 ?answer}
Answer: 1973-01-01T00:00:00Z, 1992-01-01T00:00:00Z, 1976-01-01T00:00:00Z